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Two strong and shallow earthquakes with magnitudes 6.2 and 6.9 struck Gulf of California

Two strong and shallow earthquakes struck Gulf of California on April 12, 2012. First earthquake was measured with magnitude 6.2 at 07:06:01 UTC with depth of 10.1km. A second earthquake struck same area less than 10 minutes later, at 07:15:49 UTC, recorded magnitude was 6.9 with depth at 10.3km.

NO tsunami warning, watch or advisory is in effect for these areas.

The set of earthquakes in the Gulf of California have started with a M4.7 earthquake, followed 18 minutes later by a M6.2 earthquake and another 9 minutes later with a M6.9 earthquake (the most powerful so far)

USGS has calculated that 3000 people will have experienced a very strong shaking and that 105,000 have experienced a strong shaking. Both these areas are at risk for eventual damage, especially because 9 minutes earlier another very strong earthquake struck the same area.

The Mexican Servico Sismologico Nacional reports a magnitude of 6.8 with an epicenter below land. These makes this earthquake the most dangerous in 24 hours !

Although it is a ridge earthquake, the epicenter of the M6.9 quake looks to be very close to the coast which makes this earthquake (the second very strong in a matter of 9 minutes) EXTREMELY DANGEROUS for shaking damage and fatalities. Let us hope that we are too pessimistic here. The kind of shaking will depend on the focal mechanism.